Three guys pitch in evenly and put down $10.00 each to buy a hotel room for $30.00 total. The hotel manager realizes they should have only paid $25.00 so he decides to refund them $5.00. He gives his clerk $5.00 to give back to the guys. On his way to their room he realizes he can't evenly split $5.00 between three guys so he decides to pocket $2.00 and give each guy $1.00. So each guy has $9.00 invested in the room right? And the clerk kept $2.00 right? so basic math tells us that 9 x 3 = 27 and...